This New Particle Could Change Quantum Physics Forever!

Scientists have discovered the semi-Dirac fermion, a massless particle in one direction but massive in another! Found in zirconium silicon sulfide, this groundbreaking discovery opens up new possibilities in electronics, sensors, and quantum computing. Join us as we explain how this particle was found, its fascinating properties, and the technologies it could revolutionize. Watch now and discover the future of quantum science!

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[quandaledinkles-emqz]

“Imagine a device that conducts electricity in one direction but not the other” my brother that’s called a diode

[radioactivespaghetti]

I think theres a lot of misunderstanding here. This is not really a “new particle” really. The particle at play here is the electron. This paper is about observing how the energy of electrons as they pass through a special material changes when you make a change in the magnetic field theyre applying on the sample. What they found was that it falls in line with what’s expected if the electrons are behaving as semi-dirac fermions which just means the relationship between the electrons momentum and energy is parabolic in one direction and linear in the other. This doesnt mean the electron is ever massless. this is just a way of speaking how the electron is behaving inside of the material

[colorx]

"Conduct electricity in one direction and block it on the other"

Isn't that just a diode?

[JamesEdwardTracy]

If this particle has no Mass moving in One Direction but has mass moving in another, then rapidly oscillating it should produce a force in One Direction that could be used for propulsion, I would think.

[vaedkamat]

As someone who studies condensed matter physics, let me explain how electrons can behave as massless particles in certain materials (known as topological insulators), even though electrons by nature have mass:

So basically massless Dirac fermions are only possible in a material if something called the electronic band structure (a range of allowed electron energies of a material in specific points in the crystal) exhibits something called linear dispersion, which means it's energy is proportional to its wavevector. This linear dispersion is only present in a special class of materials known as topological insulators. So in quantum mechanics, there is a quantity called the wavevector, which is basically the reciprocal of the wavelength of the particle. And due to the principles of quantum mechanics, all particles with momentum have this wavelength (known as the DeBroglie wavelength).
The reason why electrons normally have mass is because calculated by the Schrodinger equation, their energy is proportional to their wavevector squared. However, since the energy of light is directly proportional to its wavevector (Planck's Law), and the band structure of a topological insulator allows the energy of the electron to be proportional to the wavevector, the electrons inside the material behave massless, which leads to some insanely interesting proporties of the material, such as conductivity on the surface/edges but not inside the material, etc...

There are a lot of things I left out, such as all the theory involved in calculating the band structure, and what it actually is, but I hope you have a better understanding now of why electrons become massless in topological materials.

[Waghabond]

"Imagine electronic devices that conduct electricity in one direction but block it in another"

Congratulations you have invented a diode

[AyushKumarSinha-tg]

Imagine your phone colder than Antarctica

[connorthompson]

Immediate thought about diodes and logic circuits

[PatrikNeunteufel]

Cool, if we coud make someting to be conductiv in one direction and block the otherm we could make diodes

[v]

Device conducting electricity in one direction but blocking it in the other has long been known to humanity and is called a diode. And if it’s capable of multiplying the incoming signal due to the small background voltage applied close, you get a transistor, and if you put many of them in one place, it’s called a micro chip, which is the basis of all electronics now.

[coltonbenn]

All particles defy common sense.
Quantum Field Theory, defies common sense.
Existence, defies common sense.

[Kyunmatched]

Just to clarify, the mass context for semidirac fermions is not real "mass". It’s more about how their energy behaves—linear in one direction and quadratic in another. It’s not the same as the regular mass you’re thinking of, like in kilograms

[tymmiara]

I think he forgot to add a prefix "quasi-" to "particle". They have not found any new fundamental particle hiding somewhere in a metal block

[RayleeB_]

As a person who studies semi solid blocks, thank you for the particle

[Ole_Bertmussen]

Video: This is a new particle
Comments: Let me elaborate, these are electrons

[Conan]

This already exists and is called a diode.

[azhuransmx]

I hope we can finally run Crisis with this 🙏

[gildardorivasvalles]

It's not a particle, it's a "quasi-particle", which means it's the product of an actual particle moving while interacting within the environment inside condensed matter (a solid in this case), and dragging along with it a bunch of other things within the material, which makes it appear like something with exotic properties when "seen" with our measuring devices. It does not occur outside of the solid because it is not a "real" particle.

[robertcollins]

We already have devices that conduct electricity in one direction, but block it in another... They're called diodes. They've been around since 1904, when John Ambrose Fleming patented his "Fleming Valve". He called it a valve because it acts like a one-way or "check" valve used in pressurized water plumbing. It can also be referred to as a "backflow preventer", which is normally used in unpressurized plumbing such as drains. So, a diode does for the flow of electrons (electricity) what a check valve does for the flow of water .

[jonnyreverb]

Moving in one direction relative to what?